title: [Changes of the regional society and the conditions for regional health care: an example in the population structure of Tokyo].
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003710:Demography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012040:Regional Health Planning; D014041:Tokyo; D014505:Urban Population